Winding apparatus



Aug. 29, 1944. Q BROWN 2,357,079

WINDING APPARATUS Filed Aug. 1, 1940 4 Sheets-Sheet l Odell TBrouJnINVENTOR ATTORNEY 1944- o. T. BROWN 2,357,079

WINDING APPARATUS Filed Aug. 1, 1940 .4 Sheets-Sheet 2 'odez z 775mmINVENTOR ATTORNEY o. T. BROWN 5 79 WINDING APPARATUS Filed Aug. 1, 19464Sheets-Sheet s Odell TBmwn INVENTOR I ATTORNEY Aug. 29, 1944.

o. T. BROWN wimame APPARATUS Filed Aug. 1,1940

4 Sheets-Sheet 4 Odell 775mm INVENTOR ATTURNEY Patented Aug. 29, 1944UNITED STATES PATENT. OFFICE WINDING APPARATUS Odell T. Brown, OldHickory, Tenn, asslgnorto E. I. du Pont de Nemours & Company,Wilmington, Del., a corporation of Delaware Application August 1, .1940,Serial No. 349,074.

Claims.

the winding operation in order to improv the,

running qualities of the yarn in this and subsequent operations.

However, the application of the oil or other liquid to the yarn in asatisfactory, uniform manner has proven difficult. In a winding machine,the core upon which the yarn is to be wound is frequently mounted upon aspindle that is driven at a constant speed throughout the entire windingoperation. Hence, the linear. speed of the yarn being wound upon thecone increases as the package is built up. The increase in speed of thyarn from start to finish is dependent upon the size of the yarn packageformed, and in some cases, the speed increases 400%, or even more. Thus,to apply the oil uniformly to all parts of the yarn being wound upon thecone, it is necessary to soadjust the rate of application of the oil asto compensate for this increase in speed of the yarn.

It is an object of the present invention to provide an improved meansfor regulating the quantity of liquid applied to'a yarn during thewinding operation.

It is also an object of this invention to provide a means ofcontinuously applying a regulated quantity of liquid to a yarn.

Other objects of the invention will appear hereinafter.

The objects of the invention are accomplished, in general, by passingthe yarn, during the winding thereof, into contact with the flat, endface of an oiling disc which is rotating in an oil bath, andcontinuously increasing the chord of contact of the yarn with the discface as the speed of the yarn increases. Throughout the specificationany reference to the face of the oiling disc refers, of course, to theflat, end face thereof as distinguished from the circular edge of thedisc since it would be impossible to increase the chord of contact of thyarn with the circular edge thereof.

The following written description of the invention will be more readilyunderstood if taken in connection with the accompanying illustrationswherein Figure 1 is a front elevational view of the yarn from a supplypackage l3.

winding positions of a winding machine embodying the present invention.

Figure 2 is a side elevational view; with parts shown in section, of awinding machine embodying a device constructed according to theprinciples of the present invention.

Figure 3 is a plan view, showing in detail, one means whereby the motionof the traverse back is utilized to control the movement of the yarn 10over the surface of the oiling device.

Figure 4 is a plan view, showing in detail, another means whereby themotion of the traverse back may be utilized to control the movement ofthe yarn over the surface of the oiling device.

15 Figure 5 is a side elevational view, with parts shown in sction, of awinding machine fitted with a modified form of the present invention.

Referring to Figures 1 and 2-of the drawings, reference numeral lldesignates a yarn drawn Numerals l5 and I1 designate fixed yarn guideswhich may be fixed to the frame of the machine or to the oil tank 25.Numeral I9 designates an oiling disc which is positioned for rotationwithin the oil tank 25.

The disc I9 is mounted on rotatable shaft 2|, and

may be fastened to said shaft by means of a set screw or the likepositioned in shoulder 23 of the disc IS. A movable yarn guide 21 ispositioned above fixed yarn guides 15 and H. The

oiling disc I9 is positioned between yarn guides l1 and 21 in such amanner that the face of the oiling disc will be maintained in contactwith the yarn ll between these two guides. A yarn tensioning device 4|is positioned above movable 5 yarn guide 21 and a fixed thread guide 42is positioned above the yarn tensioning device. The yarn tensioningmember may be of any desired type; however, preferably a yarn tensioningmember of the type disclosed in the copending application of Arthur E.Guenther, Serial No.

309,653, filed May 24, 1938, now U. S. Patent No. 2,223,912, is used forimparting of a tension to the yarn. The yarn tensioning member of theabove-said Guenther patent comprises a flexible 45 pinch tensioningblade which is connected by linkage elements to a pivoted yarntraversing mechanism. As th diameter of the yarn package increases, theyarn traversing mechanism moves about its pivot point and-thereby shiftsthe linkage elements to decrease the tension on the yarn by reason ofthe pressure of the flexible pinch tensioning blades. As the yarn buildsup on the package and the linear speed of the yarn being woundincreases, the tension on the yarn is gradually reduced. The yarn isthen passed over a yarn bail guide 43 which is positioned above fixedyarn guide 42. The yarn is then passed through reciprocating yarn guide45 which is mounted for reciprocation in the pivoted traverse back 35 ina known manner. The reciprocating yarn guide 45 traverses the yarn whileit is being wound on a rotating yarn package 41. The yarn package 41 iswound on a yarn supporting member 43 mounted on a spindle 49 which isrotated at a constant speed.

The movable yarn guide 21 is mounted on a system of levers 23, whichlevers are pivoted at 3| to the arm 32 which is fixed on the weight 33.The weight 33 is integral with the pivoted traverse back 35. Thetraverse back and weight are pivoted at 31 to the frame- 39 of thewinding machine.

The operation of the winding apparatus shown in Figures 1 and 2 issubstantially as follows: The yarn II is drawn from the fixed package l3and is passed upwardly through fixed yarn guides l and I1. The yarn isthen passed across the face of oiling disc H, which disc is continuouslyrotated within oil tank 25. The oil, or other thread size or finish, istransmitted to the yarn from the disc l9, and the yarn is maintained incontact with the disc by fixed yarn guide l1 and movable yarn guide 21.The movable yarn guide 21 is progressively moved during the windingoperation in such a manner that the yarn will gradually contact anincreasingly large surface of the oiling disc Hi. This is clearlyillustrated in Figure 2 of the drawings. The yarn, at the beginning ofthe winding operation, contacts the disc overth chord A-B. As the yarnbuilds up on the package, the movable yarn guide is gradually shifted sothat at the end of the yarn winding operation the yarn cuts acrossdiscl9 over the chord CD. The lever members 29 which connect the movableyarn guide 21 to the pivoted weight 33 are adapted to shift the yarnguide as the weight 33 is shifted about pivot 31. The yarn is passedthrough tensioning device 4|, thence through fixed yarn guide 42 overbail guide 43 and through the reciprocating yarn guide 45 which ismaintained in contact with the yarn package being wound and traversesthe yarn back and forth across the package as the package is rotated.

Referring to Figure 3 of the drawings, the movable yarn guide 21 isshifted in the direction of the arrow positioned adjacent thereto andthrough the following leverage mechanism: Lever arm 5| is pivotallymounted in the pivoted traverse back weight 33. As the weight 33 isshifted in the direction of the arrow positioned adjacent thereto, thelever arm 5| is drawn along withthe weight, thereby transmitting a pullon the bell-crank arm 51. The arm 5| is pivoted to bell-crank arm 51 atone of the positions 55. The arm 5| is provided with a pivot connection53 which connects the same to bell-crank arm 51. The bell-crank arm 51transmits an upwardly directed movement to rod 65 through the slot 6| ofthe bell-crank lever and pin 63 connected to the rod 65. The pivot pointof the bell-crank lever is fixed by means of arm 59. The rod 65 isadapted to slide in an opening in member 51. The member 61 is rigidlyattached to the framework 63 of the winding machine. It is thus readilyapparent that the yarn will be shifted in the manner shown in Figure 2by means of the leverage mechanism shown in Figure 3, and the shiftingis controlled by the motion of the counterweight 33 as the yarn packagebuilds up, Thus, a linear 7 contact by the yarn of disc I9.

Referring to the modified form of leverage mechanism for movement of themovable yarn guide 21, shown in Figure 4 of the drawings, the yarn guide21 will be shifted in the direction of the arrow positioned adjacentthereto upon movement of the counterweight 33 in the direction of thearrow shown at that point. The lever member 1| is pivoted tocounterweight 33 at one end thereof. At the other end thereof the levermember 1| is pivoted at 13 to the curved lever arm 15. The lever arm 15is Divotally mounted at 35 on fixed arm 8|. The arm 8| is fixed to theframe 82 of the winding machine by means of bolts II. The lever arm 81,which is connected to the movable yarn guide 21, is pivoted at 85 to thecurved lever member 15. The lever arm 81 is adapted to pass through anopening in the angularly disposed element 89 fixed to the rigid member8|.

As the counterweight 33 shifts in the direction of the arrow, arm 1|pulls arm 15 about pivot 13 and thereby pulls downwardly on arm 81 whichis pivoted to the oppositely disposed end of arm 15. The movable yarnguide 21 is thus moved downwardly in the direction of the arrow adjacentthereto.

Referring to the modification shown in Figure 5 of the drawings, themovable yarn guide 21 is mounted for vertical movement, instead ofhorizontal movement, as shown in Figure 2 of the drawings. It will bereadily apparent that the movable yarn guide 21 may be moved eithervertically or horizontally to gradually increase the surface contact ofthe yarn with the oiling disc as the speed of the yarn increases due toincrease in build up on the yarn package. The movable yarn guide 21 maybe moved vertically by connecting between the yarn guide 21 and thecounterweight 33 a leverage system similar to that illustrated butconnected to the counterweight at an angle of 90 in the manner in whichthe leverage mechanism illustrated is connected to the counterweight.

It will be obvious that any other type of leverage mechanism commonlyemployed to transmit the substantially straight-line motion to themovable yarn guide may be employed in place of the leverage mechanism asspecifically disclosed herewith. It is furthermore obvious that both thedirection and extent of motion of the movable yarn guide 21 is dependentupon the adjustment of the system of leverage members, and the inventioncontemplates any adjustment that is necessary to permit the desiredmovement of the movable yarn guide as the yarn package is increased insize. In accordance with the specifically illustrated apparatus the yarnguide 21 is made movable and the yarn guide I1 is maintained stationary,so that the yarn between these two guide members will be caused to havean increasing surface contact with the oiling disc. Obviously the yarnguide 21 may be maintained stationary and yarn guide |1 moved for thesame purpose. Furthermore, if desired, both guides l1 and 21 may bemademovable to gradually increase surface contact of the yarn with theoiling disc.

According to the preferred method'of operation of the apparatus, theoiling disc I9 is rotated at a constant speed. If desired, however,speed of rotation of the disc may be varied, as the speed of the yarnincreases to pick up an increasingly greater quantity of oil. That is,if the movement of the yarn guide or guides, as described above, doesnot sufliciently compensate for the increase in speed of the yarn as thepackage is built up, satisfactory compensation may b obtained byincreasing the speed of rotation of disc It as the speed of the yarnincreases.

Although the invention has been illustrated and descri ed in connectionwith a winding machine of the zype manufactured by the Universal WindingC npany, the invention is not limited to this typ i r winding machineand may be used to advantage on any type of winding machine in which thed of the yarn increases as the yarn package is built up,

This invention provides a means of applying an oil or other treatingliquid in a uniform manner to a yarn being wound upon a winding machine,the invention providing a means for compensating for the increased speedof travel of the yarn as the yarn package is built up.

The device contemplated by this invention provides for a greater lengthof contactbetween the yarn and the oiling device than has been possiblewith previous devices. Hence, a vibration of the yarn passing over thesurface of the disc does not result in so large a variation in theamount of oil applied to a given length of yarn.

In passing over the oiling surface of the disc,

the yarn is preferably displaced from its normal,

further reduce the vibration of the yarn against the surface of the discand thus aids the uniform application of oil to the yarn. This vibrationof the yarn against the surface of previously known cylindrical wiperscontributes to the non-uniform application of oil to yarn obtained bythe use of such a device.

Since, according to this invention, the yarn wipes oil from a verticalsurface, any loose or broken ends of yarn fall from the surface of thewiper to the hub or shaft of the device where they do no harm and may beeasily removed. In the case of a cylindrical type of wiper, these looseyarns tend to form wraps about the surface of the wiper and thusinterfere with the satisfactory operation of the device. In the removalof such wraps, the surface of the wiper is often scratched.

These scratches cut and abrade the yarn passing over the wiper and greatcare must be taken to insure their removal. As mentioned above, suchwraps cannot form on the wiper surface of the disc member constructedaccording to the principles of this invention. This constitutes afurther great advantage of this device over the devices known to theprior art.

The device contemplated by this invention is less expensive than otherdevices constructed for this purpose. The device is easier to adjust forvarious size packages of yarn and does not require so accurate a settingas do devices of other types. Hence, the maintenance costs of such adevice are also low.

Since it is obvious that many changes and modifications can be made inthe above-described details without departing from the nature and spiritof the invention, it is to be understood that the invention is not to belimited to the described details except as set forth in the appendedclaims.

I claim: 1. In a yarn winding apparatus of the type in which the linearspeed of the yarn increases as the yarn package increases incircumference, an -oiling disc, means for passing the yarn in contactwith the flat, end face of said oiling disc. and means for graduallyincreasing the surface of contact a: the yarn on said disc.

2. In a yarn winding apparatus of the type in which the linear speed ofthe yarn increases as the yarn package increases in circumference, acircular oiling disc, means for passing the yarn in contact with theflat, end face of said oiling disc, the yarn at any instance describinga chord on the circular face of said disc, and means for graduallyincreasing the chord of contact of the yarn on said disc.

3. In a yarn winding apparatus ofthe type .in which the linear speed ofthe yarn increases as the yarn package increases in circumference, anoiling .disc, a pair of yarn guides for passing the yarn in contact withthe fiat, end face of said oiling disc, at least one of said yarn guidesmovable to gradually increase the surface of contact of the yarn on saiddisc.

4. In a yarn winding apparatus of the type in which a linear speed ofthe yarn increases as the yarn package increases in circumference, anoiling disc, a pair of yarn guides for passing the yarn in contact withthe fiat, end face of said oiling disc, one of said yarn guides beingstationary, and the other of said yarn guides being movable to graduallyincrease the surface of contact of the yarn on said disc.

5. In a yarn winding apparatus, a winding spindle, a traverse frame backpivoted to move away from said spindle as 'the yarn package'increases indiameter, an oiling disc, and means connected to said traverse frameback for gradually increasing the surface of contact of the yarn onflat, end surface of said disc.

6. In a yarn winding apparatus, a winding spindle, a traverse frame backpivoted to move away from said spindle as the yarn package increases indiameter, an oiling disc, a pair of yarn guides for passing the yarn incontact with the flat, end face of said oiling disc, and means con- Aguides being stationary, and means connected to said traverse frame backfor moving the other of said yarn guides to gradually increase thesurface of contact of the yarn on said disc.

8. In a winding machine, means for winding a package, means fortensioning a strand of yarn feeding to the package, a container forliquid, a

rotary contact disk partly submerged in the liquid, means for guidingthe strand across the radial face of the contact disk, and meansactuated by the increase in diameter of the winding package toprogressively shiftthe strand toward the axis of the contact disk toincrease the extact disk for moistening the yarn, means for guiding theyarn across the radial face of the contact disk, and means actuated bythe movement of the traverse frame during the growth or the package tooperate the guiding means to shift the strand toward the axis of thecontact disk to progressively increase its extent of contact therewith.

10. In a winding machine, the combination of means for winding apackage, a container for I liquid, a rotatable disk arranged to dip intothe liquid in said container, means for gu ding a strand across theradial face of the contact disk, 7

and means actuated during the winding of a package to shift the strandradially inward on the face of the contact disk to increase its extentof contact therewith.

ODELL '1'. BROWN.

